package main

import (
	"fmt"
	"time"
)

func main() {
	// 延迟两秒后打印一句话

	time.Sleep(2 * time.Second)
	fmt.Println("时间到")

	delay_6_16_1()
}

func delay_6_16_1() {
	t := <-time.After(2 * time.Second)
	fmt.Println("时间到", t)
}
